You can see a copy of that last image (3rd in the gallery) from 2017 at https://web.archive.org/web/20170707052808/https://www.ship-... and at https://newatlas.com/stad-ship-tunnel-interview-terje-andrea... .
A copy of the first image in the gallery is at https://dozr.com/blog/stad-ship-tunnel dated 2021.
Edit: ahhh, 2017 and 2021 were the previous two big announcements about the tunnel. See my notes at https://news.ycombinator.com/item?id=48597546 .